Improving Lithium Metal Composite Anodes with Seeding and Pillaring Effects of Silicon Nanoparticles
- 28 April 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 14 (4), 4601-4608
- https://doi.org/10.1021/acsnano.0c00184
Abstract
Metallic lithium (Li) anodes are crucial for the development of high specific energy batteries yet are plagued by their poor cycling efficiency. Electrode architecture engineering is vital for maintaining a stable anode volume and suppressing Li corrosion during cycling. In this paper, a reduced graphene oxide "host" framework for Li metal anodes is further optimized by embedding silicon (Si) nanoparticles between the graphene layers. They serve as Li nucleation seeds to promote Li deposition within the framework even without prestored Li. Meanwhile, the LixSi alloy particles serve as supporting "pillars" between the graphene layers, enabling a minimized thickness shrinkage after full stripping of metallic Li. Combined with a Li compatible electrolyte, a 99.4% Coulombic efficiency over similar to 600 cycles is achieved, and stable cycling of a Li parallel to NMCS32 full cell for similar to 380 cycles with negligible capacity decay is realized.Funding Information
- Basic Energy Sciences (DEAC02-76- SFO0515)
- Office of Energy Efficiency and Renewable Energy
This publication has 29 references indexed in Scilit:
- Lithium Metal Anode Materials Design: Interphase and HostElectrochemical Energy Reviews, 2019
- An Interconnected Channel‐Like Framework as Host for Lithium Metal Composite AnodesAdvanced Energy Materials, 2019
- Advancing Lithium Metal BatteriesJoule, 2018
- Design of Complex Nanomaterials for Energy Storage: Past Success and Future OpportunityAccounts of Chemical Research, 2017
- Ultrahigh–current density anodes with interconnected Li metal reservoir through overlithiation of mesoporous AlF 3 frameworkScience Advances, 2017
- Toward Safe Lithium Metal Anode in Rechargeable Batteries: A ReviewChemical Reviews, 2017
- Reviving the lithium metal anode for high-energy batteriesNature Nanotechnology, 2017
- Layered reduced graphene oxide with nanoscale interlayer gaps as a stable host for lithium metal anodesNature Nanotechnology, 2016
- Selective deposition and stable encapsulation of lithium through heterogeneous seeded growthNature Energy, 2016
- Lithium metal anodes for rechargeable batteriesEnergy & Environmental Science, 2013